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參數(shù)資料
| 型號(hào)： | PT7748N |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 17 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA27 |
| 封裝： | SIP-27 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 166K |
| 代理商： | PT7748N |
For technical support and more information, see inside back cover or visit www.ti.com
Standard Application
Features
+12V Bus Input
5-bit Programmable:
1.3V to 3.5V or
4.5V to 7.6V
High Efficiency
Differential Remote Sense
27-pin SIP Package
Parallelable with PT7748
17A current booster
Pin
Function
1
VID0
2
VID1
3
VID2
4
VID3
5
STBY #
6
VID4
7Vin
8Vin
9Vin
10
Vin
11
Vin
12
Sense Gnd
13
GND
14
GND
Description
The PT7720 series is a +12-V input,
17-A output, high-performance Integrated
Switching Regulator (ISR), housed in a
27-pin SIP package. The 17A capability
allows easy integration of the latest high-
speed, low-voltage microprocessors and
bus drivers into +12V power systems.
The output voltage is programmable
using a 5-bit code. The output voltage
range and code for the PT7721 is com-
patible with Intel’s Pentium
II processor.
The PT7720 series has been designed
to work in parallel with one or more of
the PT7748 current boosters, allowing
the output load current capacity to be
increased in increments of 17A.
A differential remote sense is provided
to compensate for voltage drop between
the ISR to the load. A 1200F of output
capacitance is required for proper operation.
PT Series Suffix (PT1234 x )
Case/Pin
Order
Package
Configuration
Suffix
Code *
Vertical
N
(EJE)
Horizontal
A
(EJF)
SMD
C
(EJG)
* Previously known as package styles 1000/
1010. (Reference the applicable package code
drawing for the dimensions and PC board
layout)
Ordering Information
PT7721
H
= 1.3 to 3.5 Volts
PT7722
H
= 4.5 to 7.6 Volts
PT7748
H
= 17-A Booster
17A, 12-V Input “Big-Hammer II”
Programmable ISR
PT7720 Series
SLTS048B
(Revised 5/21/2002)
PT7720
7 - 11
13 - 19
20 - 25
27
V
IN
GND
1H
GND
V
OUT
C
OUT
+
C
IN
+
12
26
1
L1
SYNC OUT
LOAD
REMOTE SENSE (+)
REMOTE SENSE (-)
VID1
VID2
VID3
VID4
PROGRAMMING PINS
2
3
4
STBY*
5
6
VID0
Cin = Required 560F electrolytic
(See input filter note)
Cout = Required 1200F electrolytic
L
1
= Optional 1H input choke
Pin
Function
15
GND
16
GND
17
GND
18
GND
19
GND
20
Vout
21
Vout
22
Vout
23
Vout
24
Vout
25
Vout
26
Sense Vout
27
Sync Out
# For further information, see application
notes.
Pin-Out Information
— Not Recommended for New Designs —
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PT7722C | 17 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, MSMA27 |
| PT7721C | SWITCHING REGULATOR, SMA27 |
| PT7722C | SWITCHING REGULATOR, SMA27 |
| PT7721N | SWITCHING REGULATOR, SMA27 |
| PT7722A | SWITCHING REGULATOR, SMA27 |
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